If you have an invoice to pay, you will find a Pay Now button after opening the document.
You will then have the choice between the payment methods Bancontact and KBC.
Bancontact via the browser version of Doccle:
You will receive a QR code that you can scan with Payconiq or any other Bancontact-compatible app which is installed on your mobile device.
Bancontact via the Doccle app:
This does not give you a QR code but takes you directly to a selection screen where all the Bancontact-compatible applications that are installed on your mobile device are displayed.
This option will open KBC Touch of Mobile, depending on the device you're using (pc or mobile).
Paying with Visa, MasterCard or other credit cards is not possible.